Diesel engines, anyone? How about biofuel? More builders are turning to such alternatives in the name of fuel economy, while the industry awaits fuel cells and better batteries. By Dean Sigler.
Dynafocal, conical or DIY? Some engine-mount decisions are dictated by your choice of engine, but there’s more to it than that. Dave Prizio walks you through the process of mating engine to airframe.
Drill holes without a template using a transfer, get around an airport with a foldable mobility scooter, auto-darkening smart welding helmets are introduced, and relays can save your avionics.